- it's a service for automated code testing. It's integrated with GitHub, supports many languages and libraries. This time, we're interested in PHP and the PHPUnit tests. It's very convenient to have such an instrument while developing an open source library, because other developers don't need to run tests locally, everything will be available on Travis. I'm going to show how we can add a library to travis-ci.org, and for this purpose I'm going to use 4devs/blog.